Journal ArticleDOI
Opportunistic and restrictive matings among wild chimpanzees in the Mahale Mountains, Tanzania
TLDR
The mating patterns of free-ranging chimpanzees of the Mahale Mountains, Tanzania, were studied and restrictive mating was frequently observed in a small-sized unit-group, among middle- and old-aged, high-ranking males, and among old, resident, ovulating females.Abstract:
The mating patterns of free-ranging chimpanzees (Pan troglodytes) of the Mahale Mountains, Tanzania, were studied. Opportunistic mating (non-competitive and temporary mating) was frequently observed in a large-sized unit-group, among young, low-ranking males, and among young, newcomer, non-ovulating females. Restrictive mating (a continuous sexual relationship between a particular pair which includes possessiveness and consortship) was frequently observed in a small-sized unit-group, among middle- and old-aged, high-ranking males, and among old, resident, ovulating females. Relations between those characteristics, such as group size and composition, ages of the individuals of both sexes, female estrous stages, and life history, and the 2 mating patterns are discussed.read more
Citations
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Journal ArticleDOI
Mammalian mating systems.
TL;DR: Much of the variation in mammalian mating bonds and systems of mate guarding can be attributed to differences in these three variables: the effect of male assistance in rearing young and to the defensibility of females by males.
Book ChapterDOI
Male Aggression and Sexual Coercion of Females in Nonhuman Primates and Other Mammals: Evidence and Theoretical Implications
Barbara B. Smuts,Robert w. Smuts +1 more
TL;DR: Although Trivers' general rule has many exceptions, it accurately identifies the primary source of conflict between the sexes: in most sexual organisms most of the energy and time invested in offspring comes from females.
Journal ArticleDOI
Demography, female life history, and reproductive profiles among the chimpanzees of Mahale
Toshisada Nishida,Nadia Corp,Miya Hamai,Toshikazu Hasegawa,Mariko Hiraiwa-Hasegawa,Kazuhiko Hosaka,Kevin D. Hunt,Noriko Itoh,Kenji Kawanaka,Akiko Matsumoto-Oda,John C. Mitani,Michio Nakamura,Koshi Norikoshi,Tetsuya Sakamaki,Linda A. Turner,Shigeo Uehara,Koichiro Zamma +16 more
TL;DR: The chimpanzees of the Mahale Mountains National Park, Tanzania, have been studied for more than 34 yr on the basis of individual identification and standardized attendance records to derive demographic data on disease, death, and female transfer.
Journal ArticleDOI
Male aggression against women : An evolutionary perspective.
TL;DR: A comparative, evolutionary perspective is used to generate several hypotheses to help to explain cross-cultural variation in the frequency of male aggression against women.
Journal ArticleDOI
Fission-fusion social organization in Ateles and Pan
TL;DR: It is proposed that spatial and temporal patchiness in food dispersion and abundance, resulting in a high-level of feeding competition between females within a group, has been the most important ecological selection pressure leading to the evolution of fission-fusion social organization in both species.
References
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Journal ArticleDOI
The Social group of wild Chimpanzees in the Mahali Mountains
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Journal ArticleDOI
Mating patterns and reproductive strategies in a community of wild chimpanzees (Pan troglodytes schweinfurthii)
TL;DR: While dominance ranks of the adult males showed no consistent correlation with involvement in the restrictive mating patterns, it was clear that the most dominant male did gain an advantage and was the only male able to monopolise oestrous females by showing possessive behaviour.
Journal ArticleDOI
Alpha status and agonistic alliance in wild chimpanzees (Pan troglodytes schweinfurthii)
TL;DR: It is suggested that allegiance fickleness could provide a basis for individual selection of social intelligence in chimpanzees in a habituated group of wild chimpanzees in the Mahale Mountains of Tanzania.